Gaseous fuel mixing device



July 27, 1943. F. G. SZAGER GASEOUS FUEL MIXING DEVICE Filed Feb. 3, 1941 Patented July 27, 1943 Applica-tiomFcbmwry 3, 19.41,ZScrial-Nnn377d67] a My invention relates tcigaseous fuel-:mixing'devices;particularly-hf the typethatare utilized in connection with internal combustion *enginesand theprincipal objectsnofrmy invention' are, -tot-gen erally improve upon and simplify the :c'ons'tru'dtion of thetexisting forms df gaseous fuel mixing devices, to provide ,a'mi-idng-device "of unitary construction that may be readily installed :infithe' fuel line between a carburetor and thevintake manifold of the-engine, orsaid device being built into and forming a-part ofithe carburetor .on the gaseoueiuel outlet side thereof and further; to provide a -relativel simple; :practical, l and inexpensive gaseous fuel ml-xing -device that ,will perform the functions of a supercharger in :the de-' liveryof adr-y, thoroughly'mixed gaseous fuel'to internal comtbustion engine; interposed" between the parts I!) and l l is a housing l2folu ned in two 7 parts that are practically identicalin.size,'=fom1,

. and"! L". a

the combustion chambers of the engine with which the mixing device-is associated.

4 .Furtherobjectsgof my-inventiOn-areQtQ provide a gaseous fuel mixing device havinga pair of cooperating dam-like impellers that are rotated by the suction through the-carburetor and intake manifold so as to produce a high 'degree' of turbulence within the mixing chambers in which said impellers operate, with-the-result that an ex--- tremely thorough.= and intimate mixture of air and liquid .hydro'carbonis produced, which mixture is comparatively dry,- clue toy-the breaking up of the iheavyiparticles of liquid. hydrocarbon, and the. 'rier mixture thus obtained ,produces mate- 'rially increased effective results .when ignited in the combustion chambers of the engine.

' and forined integral therewithisca-narrow bar With theforegoing and other objectsin-view;

my invention consists in certain novel features of vconstruction.and arrangement of parts that will' beIhereinafter-more fully described and claimed and illustrated .Iin..the accompanying drawing inwhich;

Fig. 1 is a" vertical section taken through the center of a gaseous'fuelmixing deviceconstructcd in'a'ccordance with myiinven'ti'on.

.Fig. 2Zis an elevational detail view-taken looking i'nthe direction indicated' by the arrcwJ-in Fig.1..

F1g."3is a horizontal section taken on the line 33 of Fig. 1.

Fig. 4 is a top plan view of one of the impellers removed from the mixing chamber of the device.

Fig. 5 is a perspective view of one of the bearings for the impellers;

Referring by numerals to the accompanying drawing which illustrates a preferred embodiment of my invention, l0 designates a. part of a and constru ction, a11d sa id partsbeing detachably secured' toeach otheriby means of fastening devices .15., such'sasrscrews er -bolts, that pass through flanges l'on t'he'2adjacent edges-0f" the' p'artsof the housing.- lsuita'ble packing is" arranged in the iointslbecween :the :parts of theihousing m and .bc-' tween thelends of said housing'and :theparts Hi 'IEhe icham'ber 5| 4". thin uhcusing tz contains-the fan-like impellers :andzthereforefuhctions as a nzixing 'chainber and thexopen' opposite "ends "of I this ichamber communicatesrespectively' withithe passageeway's t-hroughathetducts wand I I.

- giro;provide:hearings=fortwo-impellers, rings '15 are zform'ed integral with thexuppef end :of the upper partiof therhousing and with ithe lower send of the iloyver. in art," and these-rings 1proj ect into by bolts er-otherwise tcscorresponding tflanges on tlie-carburetor fll and ntake'i'manifold 5H. lifxtemding diametrically-across each ring-l5 i 8, in theccenter. of whichis formed a threaded aperture l 'lh screw-seatedin.each apertureis.a.

screw [8 of hardened metal, therinner endfthereof bein pointed as designed .by'fl '9,l.and seated .on said screw and bearing againstfthe outerfacecf the bar "[6 isja" u't ZB jtha't functions as a'lock niitto secureth' re'w" 'its adjusted osition.

opposite points ontheiparts housing l2 1 the -'flanges. that 3 receive k the screws 21 a'suflicient distance to'. accom'm'cdatethe ends one:barifidhat'iextends diametrically across' the mixing (chamber ePartstof thexpacking" used between-the flanges z'oftthe Ehousingcmenibers :I Z

surround'ithe sends 10f :the ibar :ZZEzthatare posi unmad -between said 'flanges an'dqcertainzof the screws 13 pass through zthe ends o theibar 2,2 to rigidly secure*the.sameato the housing; 1 v Formed on-the upper and lower faces of the centralportion of bar 22 in axial the sCreWs i8 arescup bearings ,23. v

'The fan-like impellers thatare mounted for operation in chamber If within housing l2 are practically identical in size, form; andconstruction, and one of said impellers is shown in plan I in Fig. 4. This impeller comprises a peripheral carburetor or a duct leading therefrom and II" designates a portion of the intake manifold of an ring 24, preferably wire, and secured thereto are theends of a diametrically arranged narrow bar 25. Formed integral with the'center of vthis bar and are nermanentlyrsecurediby-weldingforother wise --to flange :15." that i'a-I'B Ldetachably connected re spread apartas-des'ignatedby alignment with of cross bar 22; l

, and formed in" theouter facerof said discis a shallow recess 29 which maybe conical in shape and which provides a bearing'for the end of the l v corresponding screw 18. The parts 'just described comprisea substantially one-piece skeleton impeller frame and one frame is positioned above the cross bar 22am the mixing chamber or in the intake manifold through which said mixture passes.

It is to be noted that the skeleton impellers utilized in my improved structure are entirely devoid of hubs and axles and that small square openings are formed between the inner ends of the blades, which provision, according to repeated tests and experiments, materially increases the utility and efficiency of the device, inasmuch as there is no.restrictionaoribafliing of-jche flow of gaseous fuel through theaxessof the impellers.

Further, the cross bars 25 and 21, which are sub-' vject to very little strain, may be made very narrow and bearings 23 and discs 28 may be made very small in diameter thus offering minimum restriction.- to the flow of gaseous fuel through the device.

other frame is positioned below said'crossbari The impeller frames thus arranged are mounted for independent rotation between the screws 18 and the bearings, 23 on the upper and under sides Arranged between the ring 24 and bar 21 of each impeller frameis aseriesof radially disposed blades. or ,vanes 30; that-are correspondingly inclined vertically;thus forming in effect a bladed fan and the blades of'the'upper one of the-impeller frames are oppositely inclined'with respect to the blades carried by the-lower frame. The outer ends 'of theblades 30 are rigidly secured by welding or otherwise to the peripheral rings 24.,and the cross bars 25 of the impeller frames.

In operation, the impellers are" rotatedas a result of'thevflow of'the gaseous fuel from the c'a'rburetor'to the intake-manifold, which'flow is induced by the suctionproduced in'the corn bustion chambers of the engine on'the'suction strokes of the pistons therein; and as the blades of the two impellers are oppositely arranged with respect to each other, said impellers will simultaneously-rotate in opposite directions,

Obviously, thisirotation of the impellers in opposite directions produces amarked degree of turbulen'cei'n the'chamber l4 and a consequent breaking up of the largerparticles of liquid' liydrocarbon sothat the gaseous fuel-in a thorough- 1y 'mixed and comparatively dry condition is delivered to the intake manifold which leads to the engine: cylinders. v v This thorough mixing of the air with the liquid hydrocarbon is particularly effective while the engine is operating at higher speeds and under functions of a supercharger so as to bring about increased efficiency of engine operation.

Inasmuchas: the impelltarsrotate in opposite directions, the flow of air andliquid'hydrocarbon into the mixingchamber is equalized so that the flow of the gaseous mixturefrom the device'to the intake manifold is made much more uniform than is an entire-"absenceof tendency of the incoming V mentioned bar, ofimpjeller framesarranged for- I suchconditionsthe mixing device'performs the air and liquid hydrocarbon to stratify m the H --Thus,-=a-ny 1 minute drops of gasoline in the the size, form and construction :of the various parts of my improved gaseous fuel mixing deidea-may be made and substituted for those here in shown anddescribed, without departing from the spirit of my invention, the scope of which'is set forth in the appended'claim.

I claim'as myinvention: a In a gaseous fuel mixing device, the combina tioii withatwoipart housing providing a mixing chamber, said housing comprising a pair of ring flanges, and housing members {havingftheir inner ends' 'detachably connected, the outer ends'of'said housing members being provided with openings and rig-idly'seated in said ring flanges, diametrically arranged' narrow bars disposed'across the openings at theouter ends of saidho'usingmembers, bea'ringmembers 'adjustably seated in the centers of saidbars, a' diametricallyarranged bar extending across the center of the mixing'chamher-in said hmisin'gg the ends of whichlast mentioned bar are clamped between theconn'ected ends of said housing members, upper' andlower bearing members formed onlthe clen ter of said to permit the free flow of gaseous fuel axially through'the'impellers. v I i i (1.,SZAGER; 

